FreeCAD for Beginners #17 - Creating the assembly with Assembly4 workbench
ฝัง
- เผยแพร่เมื่อ 27 มิ.ย. 2024
- Putting together all the parts that we have created using the Assembly4 workbench in FreeCAD 0.19. We show how to assemble all the parts using local coordinate systems.
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Songs:
Raw Space by Spazz Cardigan (intro)
00:00 Introduction
01:00 Starting Assembly4
03:00 Opening the existing models
05:00 Preparing the parts
19:00 Importing parts to the assembly
22:00 Preparing the second set of parts
30:00 Final Assembly
31:30 Coloring the parts
33:00 Bill of Materials
36:00 Outro - แนวปฏิบัติและการใช้ชีวิต
The next video will do the same assembly but using the Assembly3 workbench
Wow, what a WEALTH of information, from a 35 minute video that I have spent several hours on in order to be able to complete all the needed steps for all of the particular operation, right, I am a BEGINNER? I am really PROUD to say i was able to complete my project, the assembly instructions for me was VITALLY IMPORTANT! I will need to be able to complete parts separately that I can then assemble into a complete working widget! If or should I say "when" I get stuck a leave a comment and someone always gets back to me expediently, how awesome is that, such personal, one on one instruction in a very timely manner is a real TREASURE to find. I had to become a PATREON in order to help cover some of the overhead in which I am sure will be used to enhance the content of the Adventures in Creation videos. Thank You
Thanks Gary, I am excited to see your progress.
My OCD is next level looking at that Crankshaft, lol. Great tutorial! THanks!
Yeah, it's not an engineering project ;-) I seriously considered going back and making the crankshaft the proper size but I kept my eye on the prize, to demo the assembly not to build the greatest engine as we all know electric vehicles are where it's at now :-)
@@Adventuresincreation What? No more vibration, smell, noise? They'll never catch on...
@@Adventuresincreation Lol crankshaft should be parallel to cylinder block, it's 90* off. Great job tho, Thanks
Yeah, if you look at the thumbnail, I did correct it just not in the video 😉
@@bluesteel5869 Having not watched any of the previous videos (I will though) I was thinking that he was going to go for a double crankshaft with some heavy duty gearing to link them for output. My imagination is horrible...
What a great series. Thanks again for putting this together. I just started Freecad 9 days ago and your instruction is excellent in the way it repeats and builds on the previous concepts. Thanks also for commenting and helping when someone gets stuck.
Thanks for the feedback
@@Adventuresincreation nice work in FREECAD! thanks!!!!
Took me long time to realize why the LCS and attachments are defined on part level and not in the assembly, but finally got it, thanks
Great!
Very nice to see how the Assembly4 workbench fits into the grand scheme, thanks :)
Thanks! I think assembly 3 is pegged to be the preferred way to create assemblies in the future.
Liking your step through with all the corrections along the way. That is completely realistic to how it's done in the real world. Even if it makes for longer videos, because let's face it this is instructional, and it takes what it takes. When I make videos about making stuff for camping, I will be wanting to reference your videos if I may. 👍✌🥃
You can absolutely reference my videos anytime. If you need raw footage let me know, I can help you out.
Awesome video buddy and many thanks to Freecad, you have changed my life.
Excellent!
I have an assembled engine now, following along with v0.20 (which has different tooltips for some of the tools, but the icons and actions are the same, so that's OK). I will say that I nearly went spare when I couldn't assemble the block onto the piston. No matter what I did, Assembly4 didn't think that the block had a LCS to use, although I could *see* one being drawn. Eventually, it dawned on me that I have to select the PART before defining the LCS, not the BODY. D'oh.
Many thanks for these videos, as ever I am learning a lot.
Glad you figured it out.
😅Whew! That 3-parter took a few evenings but it all works and, more importantly, I understand it. I still don't understand how sketches, pads etc get turned on and off seemingly at random. Probably operator error, but don't know why. Thanks for the video.
They do go off when you create a new sketch or pad a sketch etc. Knowing how to turn them back on is the important part.
Excelente, think I’ve got enough to start my project now. Thanks.
Great, good luck with the project
Thank you for this series. You make things very clear in all the areas everybody else takes for granted or as an after thought. Your easy way about how to proceed and showing that there is no such thing as an error is exceptional. Nothing made sense after watching many videos until I happened upon yours. And I use other cad software. I had surfaces in sketcher moving about, etc. You dove directly into constraints which took all the issues out and all the points aligned, no more zooming trying to place them just here or there, and things came together - After just one of your videos. The official documentation leaves out, as for instance, I want to put a hole there ... yeah, go ahead, good luck. You showed how to use multiple sketches and attachment points and it just worked - The relationships between layers and points with measurements as constraints worked with ease.
My issue in understanding is how having the center point relates to x,y,z as 0.0.0 - in other words how does my design conceptually align to the zero position I set on the cnc when I clamp the block of material in place. From freecad to cnc bed zeroed coordinate relationship escapes me just now. Yeah, and I bet it really simple huh - Like Dr. Who stated "It's easy when you know how!'.
Thanks for the feedback. I am glad I could help. I also had some issue with the CNC 0,0,0 point, I don't like the way that if you move it you have a copy of the model that is offset to where the 0,0,0 is instead of the coordinate system moving to your existing model. I work around it by always modeling around the 0,0,0 LCS then the start point for my CNC is in the middle of the part. That way I don't have shift anything. If you take a look at my CNC routing playlist you will find many examples of that.
You are doing such a great job with your video series! Previously I've struggled and struggled with Freecad to make slow and painful progress and you've filled in a whole bunch of gaps and shown the misteps I've made. One small suggestion - show folks how to use transparency, it makes a huge benefit with complex shapes and when aligning parts in an assembly :) Many thanks
Thanks for the feedback John
lol, crankshaft 90 turned sideways. you are going to have some hard knocking in that enigine.
Big end banging
also the cylinder control rod is connected to the wrong part of the crankshaft, u wont get an offset rotation from there.
Thanks for sharing.
Thanks for the great videos. New to FreeCAD and learning a lot. I have a small issue though. The big size of the dot around your mouse combined with the speed of what you are doing in the combo window makes it hard to follow sometimes. Since the tree is where I get lost the most it would be helpful if you could give more attention when working there. Thank you
I Will bear that in mind
Great video, thanks. How far is freecad from being able to rotate a complex assembly to where someone can check for interferences? One of the main reasons I never tried to fight through it was due that being the problem with several ideas.
I think you can look for interference using the clipping planes to see however, I am not aware of anything automated that would highlight interferances. I will be looking into it though
Wonderful video. Very well explained as are your other videos. I’m currently working on a project that involves two plexiglass plates. The fulcrum is mounted in two 4 mm bearings and is between the plates. I’m using spacers and 4mm screws to space the plates. The short end of the fulcrum is connected to a RC model servo via rod linkage and the long end of the fulcrum is connected to a small block that is pushed and constrained within a square pipe (1”x1”). I wanted to animate that servo pushing/pulling the fulcrum and attached block…..which Is very similar to your model. Is Blender a free product?
Yes, Blender is FOSS. If you are interested in animating and rendering your models it is a great alternative to the limited animation in FreeCAD. I love the collaboration of the two software packages. The issue is Blender is a comprehensive modeling package with quite a steep learning curve.
Hi great work you are doing, I appreciate it greatly jst a Question though, what happens when you press inertial CS or Deactivated and whats the difference between them?
Let me check when I get back to my computer 🖥
Like your videos been learning a lot from you good job keep it up! I’m having a problem with this assembly bench however. I’m on the fifth attempt and I keep running into a problem on at least one part I’m trying to assemble. I keep running into a blank “select LCS in Part:” after clicking on place linked part in the task tab. I’ve created the LCS for the parts and Checked and double checked...basically I’ve done this five times and can’t figure it out it always goes wrong somewhere. Any advice would be awesome
I almost guarantee it's where you have the LCS attached. Make sure you have attached it to the correct body that you are adding to the assembly.
It seems to me that the ConRod Big End is surrounding the wrong cylinder of the Crankshaft. Wouldn't the end cylinder of the Crankshaft be captured elsewhere in an extended in the -Z direction Block? I believe the Rod Big End should surround the center cylinder of the Crankshaft. I understand that this is a simplified representation of an Engine Assembly. Am I right or wrong?
For a true representation the big end should be split so that it can be attached to the con rod. It is indeed a very simple representation.
You are right, and yeah, got my OCD going with that too. But it is a great video, and the way he explains it all, it seems like it would be an easy fix to create a new lcs for the crankshaft on that central (offset) crank part.
The video is very good. Very informative. As a total beginner, I feel like we have jumped from beginner to intermediate. Am i just being a wuss?
I am glad it helped. There is a steep learning curve but if you approach it a bit a time you will soon be an expert. :-)
Great videos, thanks for doing them. I wonder why you don't click on a face to start a new sketch. I'm actually referring back to the crankshaft video #15. Instead of setting the position, you could merely click the face of the pad that you want to add the new sketch. Is there a certain reason? I know it does help people understand more steps and learn how to set positions.
Sketching on a face is a convenient way to create a model but, if you later change the model you may end up being a victim of the topological naming issue. The faces change their reference number and the sketch will be placed on a different face causing unpredictable results with your model. - It may be fixed in the future then we can do it the way you have suggested.
@@Adventuresincreation ok, thanks for the info, good point. I didn't realize that or maybe I did and never knew what the problem was. I have version 0.20.2 now, maybe someone fixed it? Love your videos.
Great video.
But I have a question.
In the last video, Body were inserted into the assembly model. In this video, the Part, 05:10.
So there is a difference in using the Body and the Part?
(sorry, DeepL Translate)
It depends on the the assembly workbench, assembly 4 likes parts to assign lcs to.
@@Adventuresincreation th-cam.com/video/KffHu3M5gEY/w-d-xo.html - also workbench Аssembly 4. But Body were used, not Part. Maybe it doesn't matter at all in the Assembly 4?
Is the con rod 90 degrees out?
It was, and if you look at the thumbnail I rotated it but didn't want to make the video even longer.
am having problem when trying to pad an object
What kind of problem? Can you be more specific?
I have opened your EngineAssembly4 and smallEngine FCStd files from ianj001-patreon-exclusive-b76bb5c478cc. These files are NOT THE SAME ONES as in your video !!!
They show multiple errors, and are unuseable !!! If they are not the correct ones, then how (as a Patreon) can I get them.
I thought that Patreon priveleges would give me access to ALL files shown in the videos. Is that correct ?? Where can I get easy access to ALL of the associated files, and why do they differ from those shown in your videos ???
They are probably from an earlier version of freecad so may have errors in a newer version. They are the original files that were used in the video.
unsub until shorts are gone
You don't have to watch the shorts. Thanks for your support.